import { constantRoutes } from '@/router'
import { getUserRouter } from '@/api/system/menu'
import Layout from '@/layout/index'
const userrouter = {
    state: {
        routes: [],
        addRoutes: []
    },
    mutations: {
        SET_ROUTES: (state, routes) => {
            state.addRoutes = routes
            state.routes = constantRoutes.concat(routes)
        }
    },
    actions: {
        // 生成路由
        GenerateRoutes({ commit }) {
            return new Promise(resolve => {
                // 向后端请求路由数据
                getUserRouter().then(res => {
                    const accessedRoutes = filterAsyncRouter(res.data)
                    accessedRoutes.push({ path: '*', redirect: '/404', hidden: true })
                    commit('SET_ROUTES', accessedRoutes)
                    resolve(accessedRoutes)
                })
            })
        }
    }
}

function filterAsyncRouter(asyncRouterMap) {
    return asyncRouterMap.filter(route => {
        if (route.component) {
            if (route.component === 'Layout') {
                route.component = Layout
            } else {
                route.component = loadView(route.component)
            }
        }
        if (route.children != null && route.children && route.children.length) {
            route.children = filterAsyncRouter(route.children)
        }
        return true
    })
}





export const loadView = (view) => { // 路由懒加载
    return (resolve) =>  require([`@/views/${view}`], resolve)
}

export default userrouter